28158952 has 8 divisors (see below), whose sum is σ = 52798050. Its totient is φ = 14079472.

The previous prime is 28158917. The next prime is 28158967. The reversal of 28158952 is 25985182.

It can be written as a sum of positive squares in only one way, i.e., 27941796 + 217156 = 5286^2 + 466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1759927 + ... + 1759942.

Almost surely, 2^28158952 is an apocalyptic number.

It is an amenable number.

28158952 is a deficient number, since it is larger than the sum of its proper divisors (24639098).

28158952 is a wasteful number, since it uses less digits than its factorization.

28158952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519875 (or 3519871 counting only the distinct ones).

The product of its digits is 57600, while the sum is 40.

The square root of 28158952 is about 5306.5009186846. The cubic root of 28158952 is about 304.2324226719.

The spelling of 28158952 in words is "twenty-eight million, one hundred fifty-eight thousand, nine hundred fifty-two".